JP5950397B2 - Column-beam joint bracket - Google Patents

Description

  The present invention relates to a beam-column joining bracket used for joining a steel pipe column and an H steel beam.

  Conventionally, in order to join an H steel beam to a steel pipe column, first, a short bracket having the same cross-sectional shape as that of the H steel beam is welded to the outer surface of the steel pipe column. Next, the end faces of the bracket and H steel beam are put together, and both are connected by bolts with a fixed plate between the horizontal plate of the bracket and the flange of the H steel beam, and between the vertical plate of the bracket and the web of the beam. To do.

  However, in this method, it is necessary to hold the H steel beam suspended by a crane or the like at the same height as the bracket, but the end surfaces face each other, and it is necessary to work in an unstable state. Furthermore, in addition to the need for two fixing plates for fixing the upper and lower flanges of the bracket and the H steel beam, and one fixing plate for fixing the bracket and beam web, Accordingly, a large number of bolts for fixing are required.

In order to solve the above problem, a bracket has been proposed in which the upper and lower flanges of the H steel beam are inserted and fixed between horizontal plates formed in a slit shape (for example, refer to Patent Document 1).
In this bracket, a pair of two horizontal plates are integrally projected in the same direction, and the upper and lower flange ends of the H steel beam are fixed with bolts inserted through the horizontal plate and flange of each diaphragm, respectively. Is.
According to this bracket, since the flange of the H steel beam is inserted between the horizontal plates of the bracket and directly connected by bolts, a special fixing plate is not required and the number of bolts can be reduced.

JP-A-4-343936

  However, the bracket described in Patent Literature 1 needs to form a slit with two horizontal plates, and requires a pair of four plates. Furthermore, it is necessary to insert the upper and lower flanges of the H steel beam into the upper and lower narrow slits.

  The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a column beam joint bracket having a small number of parts and excellent workability.

The present invention is as follows.
1. A column beam joint bracket for fixing an H steel beam to a pair of diaphragms formed by projecting in the horizontal direction of a steel pipe column and comprising an upper diaphragm and a lower diaphragm,
An upper horizontal plate having one end joined to the upper diaphragm and the other end abutting the upper flange and the upper surface of the H steel beam flush with each other;
A lower horizontal plate facing the upper horizontal plate, one end side of which is joined to the lower diaphragm, and the lower flange of the H steel beam is mounted and fixed to the other end side;
A vertical plate connecting the upper horizontal plate and the lower horizontal plate and abutting and fixing the web of the H steel beam;
A horizontal fixing plate for connecting and fixing the upper horizontal plate and the upper flange;
At the bottom of the vertical plate, a notch for loosely inserting the lower flange is formed ,
The contact portion of the vertical plate with the web has a step between the non-contact portion and the surface of the non-contact portion and the surface of the web are formed flush with each other. A column beam joint bracket comprising a vertical fixing plate for connecting and fixing the web .
2. At least one of the upper surface of the upper horizontal plate, the contact surface of the lower horizontal plate with the H steel beam, the contact surface of the vertical plate with the H steel beam, and the lower surface of the horizontal fixing plate, Anti-slip treatment is applied. Column-beam joint bracket described in 1.
3. Anti-slip processing is applied to the contact surface of the vertical fixing plate with the H steel beam . Or 2. Column-beam joint bracket described in 1.
4). 1. The anti-slip surface is formed with a number of concave and convex files . Or 3. Column-beam joint bracket described in 1.
5). The vertical plates are positioned so that the side end surfaces of the upper flange and the upper horizontal plate and the side end surfaces of the lower flange and the lower horizontal plate are all flush with each other. To 4. The column beam joint bracket of any one of these.

According to the beam-column joining bracket (hereinafter also simply referred to as “bracket”) according to the first aspect of the invention, there is only one horizontal fixing plate for connecting the upper horizontal plate and the upper flange of the bracket. The score can be reduced.
Further, one end side is joined to the upper diaphragm, the other end side is opposed to the upper horizontal plate that faces the upper flange and the upper surface of the H steel beam flush with each other, one end side is joined to the diaphragm, and the other end Because it is equipped with a lower horizontal plate for mounting and fixing the lower flange of the H steel beam on the side, the end face of the upper flange of the H steel beam is abutted against the upper horizontal plate and the lower flange is placed on the lower horizontal plate Excellent workability because it can be fixed with
Furthermore, since the bracket body can be prepared in advance before construction, the work efficiency at the construction site can be further enhanced.
Further, the contact portion of the vertical plate with the web has a step between the non-contact portion and the surface of the non-contact portion and the surface of the web are formed flush with each other. Since the vertical fixing plate for further connecting and fixing is further provided, the H steel beam can be more reliably fixed.

  According to the column beam joint bracket according to the invention of claim 2, in addition to the effect of the invention of claim 1, the upper surface of the upper horizontal plate, the contact surface of the lower horizontal plate with the H steel beam, the H of the vertical plate When at least one of the contact surface with the steel beam and the lower surface of the horizontal fixing plate is subjected to anti-slip processing, it effectively prevents the members on the contact surface from slipping during construction. Therefore, the H steel beam can be fixed more safely and reliably.

According to the column beam joint bracket according to the invention of claim 3 , in addition to the effect of the invention of claim 1 or 2 , anti-slip processing is applied to the contact surface of the vertical fixing plate with the H steel beam. Therefore, even when the vertical fixing plate is provided, it is possible to effectively prevent the members on the contact surface from slipping, so that the H steel beam can be fixed more safely and reliably.
According to the beam-column joining bracket according to the invention of claim 4 , in addition to the effect of the invention of claim 2 or 3 , the surface subjected to the anti-slip process is formed in a large number of uneven files. Therefore, the anti-slip effect is high during construction, and the H steel beam can be fixed particularly safely and reliably.

According to the column beam joint bracket according to the invention of claim 5 , in addition to the effect of the invention according to any one of claims 1 to 4 , the side end surfaces of the upper flange and the upper horizontal plate, and the lower flange Because the vertical plate is positioned so that the side end surfaces of the lower horizontal plate are flush with each other, the horizontal plate of the bracket and the flange of the H steel beam can be overlapped with each other without any misalignment. H steel beam can be fixed to

It is a perspective view which shows the state which concerns on Example 1 of this invention and fixed the H steel beam to the column beam joining bracket joined to the steel pipe column. It is a perspective view which shows the state which removed the H steel beam from the state of FIG. In FIG. 1, it is a longitudinal cross-sectional view containing four bolts before the horizontal direction of a horizontal plate. FIG. 1 is a longitudinal sectional view including two bolts on the other end side of the horizontal plate in FIG. 1. It is a perspective view which shows the state which concerns on Example 2 of this invention and fixed the H steel beam to the column beam joining bracket joined to the steel pipe column. It is a perspective view which shows the state which removed the H steel beam from the state of FIG. In FIG. 5, it is a longitudinal cross-sectional view containing four bolts before the horizontal direction of a horizontal plate. In FIG. 5, it is a longitudinal cross-sectional view including two bolts on the other end side of the horizontal plate. It is a perspective view explaining the construction method of H steel beam to the beam-column joining bracket which concerns on Example 2. FIG. It is the perspective view seen from the opposite side of FIG. In FIG. 10, it is a perspective view which shows the location which gave the anti-slip | skid process of the file. It is a perspective view which concerns on Example 3 of this invention and shows the state which fixed the H steel beam to the column beam joining bracket which has a scallop.

  Hereinafter, the present invention will be described in detail with reference to FIGS. In addition, this invention is not restricted to what is shown to the specific example described in this figure, In the technical scope of this invention, it can change variously according to the objective and the use.

  The column beam joint bracket of the present invention is a column beam joint bracket for fixing an H steel beam to a pair of diaphragms formed by projecting in the horizontal direction of a steel pipe column and consisting of an upper diaphragm and a lower diaphragm. The upper diaphragm is joined to the upper diaphragm, the other end is flush with the upper flange and the upper surface of the H steel beam, the upper horizontal plate is opposed to the upper diaphragm, and one end is joined to the lower diaphragm, A lower horizontal plate for mounting and fixing a lower flange of the H steel beam, a vertical plate for connecting the upper horizontal plate and the lower horizontal plate, and fixing a web of the H steel beam, the upper horizontal plate and the upper A horizontal fixing plate for connecting and fixing the flange, and a notch for loosely inserting the lower flange is formed in the lower portion of the vertical plate.

The “diaphragm” is a member that protrudes in the horizontal direction of the steel pipe column. In the present invention, the diaphragm 70 includes a pair of an upper diaphragm 71 and a lower diaphragm 72 as shown in FIG.
The “H steel beam” is a long beam having a cross section made of H-shaped steel. In the present invention, as shown in FIG. 1, the H steel beam 60 includes an upper flange 61, a lower flange 62, It consists of the web 65 which connects both.

The column beam joint bracket 10 according to the first embodiment embodies the column beam joint bracket of the present invention (see FIGS. 1 to 4).
The column beam joint bracket 10 is a column beam joint bracket that fixes the H steel beam 60 to a pair of diaphragms 70 including an upper diaphragm 71 and a lower diaphragm 72, and one end side is joined to the upper diaphragm 71, and the other end. The upper horizontal plate 11 whose side is flush with the upper flange 61 of the H steel beam and the upper surface is opposed to the upper horizontal plate 11, one end side is joined to the lower diaphragm 72, and the H steel beam is connected to the other end side. 60, a lower horizontal plate 12 for mounting and fixing a lower flange 62; a vertical plate 15 for connecting the upper horizontal plate 11 and the lower horizontal plate 12 and abutting and fixing the web 65 of the H steel beam 60; A horizontal fixing plate 40 for connecting and fixing the upper horizontal plate 11 and the upper flange 61, and the lower flange is idled at a lower portion of the vertical plate 15. Notch for is formed.

  As shown in FIG. 2, the beam-column joining bracket 10 includes an upper horizontal plate 11, a lower horizontal plate 12 that faces the upper horizontal plate 11, and a vertical plate 15 that connects the upper horizontal plate 11 and the lower horizontal plate 12. Consists of. The beam-to-column joining bracket 10 may be formed by separately manufacturing these three plates and joining them by welding, but is preferably formed integrally by casting or the like.

As shown in FIG. 2, one end of the upper horizontal plate 11 is joined to the upper diaphragm 71 by a welding portion 95. As shown in FIG. 3, the tip portion on one end side is formed with a welded portion 95 secured by inclining downward. In construction, the other end is abutted so that the upper flange 61 of the H steel beam is flush with the upper surface.
As shown in FIG. 2, the upper horizontal plate 11 is formed with a through hole 11 h for bolting a horizontal fixing plate 40 to be described later. The number of through holes 11h is not particularly limited and can be 2 to 6, but is usually 4.

The lower horizontal plate 12 faces the upper horizontal plate 11, and one end side is joined to the lower diaphragm 72. As shown in FIG. 3, the distal end portion on one end side is inclined to secure the welded portion 95 as in the case of the upper horizontal plate 11. The lower flange 62 of the H steel beam 60 is placed and fixed on the other end side of the lower horizontal plate 12.
As shown in FIG. 2, the lower horizontal plate 12 has a through hole 12 h for fixing the lower flange 62. The number of through holes 12h is not particularly limited and can be 2 to 6, but is usually 4.
Note that when the upper horizontal plate 11 and the lower horizontal plate 12 are joined to the upper diaphragm 71 and the lower diaphragm 72, respectively, the washer 80 is joined in advance.

As shown in FIG. 2, the vertical plate 15 is a member that connects the upper horizontal plate 11 and the lower horizontal plate 12 and abuts and fixes the web 65 of the H steel beam. The vertical plate 15 has a notch 15c for loosely inserting the lower flange of the H steel beam.
As shown in FIG. 1, the vertical plate 15 includes a contact portion 15 </ b> B and a non-contact portion 15 </ b> A that contact the web 65 of the H steel beam. As shown in FIG. 2, the contact portion 15B is formed with a through-hole 15h for fixing the web 65 of the H steel beam with bolts. The number of through-holes 15h is not particularly limited and can be 2 to 6, but is usually four.

  As shown in FIG. 4, the positions in the width direction of the vertical plate 15 with respect to the upper horizontal plate 11 and the lower horizontal plate 12 are the side end surfaces 61 s of the upper flange 61, the side end surfaces 11 s of the upper horizontal plate 11, and the lower flange 62. The vertical plate 15 can be positioned so that both the side end face 62s and the side end faces 12s of the lower horizontal plate 12 are flush with each other. By doing so, the left and right widths of the horizontal plate symmetric with respect to the web of the H steel beam become the same length A. That is, the horizontal plate of the bracket and the flange of the H steel beam can be overlapped without being displaced, and the H steel beam can be more securely fixed.

  As shown in FIG. 1, the horizontal fixing plate 40 is a member that connects and fixes the upper horizontal plate 11 and the upper flange 61. As shown in FIG. 10, the horizontal fixing plate 40 is formed with a through hole 40h for fixing the upper horizontal plate 11 with bolts and a through hole 40n which is a through hole for fixing the upper flange 61 with bolts. . The number of through-holes 40h and 40n is not particularly limited, and can be 2 to 6, respectively, but is usually four.

The column beam joint bracket 20 according to the second embodiment also embodies the column beam joint bracket of the present invention (see FIGS. 5 to 8).
The column beam joint bracket 20 is a column beam joint bracket that fixes the H steel beam 60 to a pair of diaphragms 70 including an upper diaphragm 71 and a lower diaphragm 72, as in the column beam joint bracket 10 according to the first embodiment. , One end side is joined to the upper diaphragm 71, the other end is opposed to the upper horizontal plate 11 with the upper flange 61 and the upper surface of the H steel beam being flush with each other, and the one end side is opposed to the lower diaphragm. 72, the lower horizontal plate 12 on which the lower flange 62 of the H steel beam 60 is placed and fixed to the other end side, the upper horizontal plate 11 and the lower horizontal plate 12 are connected, and the H steel beam web is connected. A vertical plate 16 for abutting and fixing 65, and a horizontal fixing plate 40 for connecting and fixing the upper horizontal plate 11 and the upper flange 61. At the bottom of the over preparative 16, notch 16c for loosely inserted the lower flange is formed.

As shown in FIG. 6, the beam-column joining bracket 20 is different from the beam-column joining bracket 10 according to the first embodiment, and the contact portion 16B between the vertical plate and the web of the H steel beam is in contact with the non-contact portion 16A. By having the step 18 therebetween, the non-contact portion 16A and the web surface are formed flush with each other in a state where the H steel beam is bolted to the column beam joining bracket 20.
Further, as shown in FIG. 5, a vertical fixing plate 50 for connecting and fixing the vertical plate 16 and the web 65 can be further provided. By doing so, the H steel beam 60 can be more securely fixed to the beam-column joining bracket 20.

Regarding the effects of the upper horizontal plate 11, the lower horizontal plate 12, and the notch portion 16 c constituting the beam-beam connecting bracket 20, the upper horizontal plate 11, the lower horizontal plate 12, and the notch of the beam-beam connecting bracket 10 of the first embodiment. Since it is the same as that of the part 15c, the description is abbreviate | omitted.
In addition, the column in the width direction position with respect to the upper horizontal plate 11 and the lower horizontal plate 12 of the vertical plate 16 is that the horizontal plate with the same horizontal length as the web of the H steel beam has the same length A. This is the same as the beam joint bracket 10 (see FIG. 8).

The beam-to-column connection bracket 30 also embodies the beam-to-beam connection bracket of the present invention (see FIG. 11).
The column-beam connecting bracket 30 is the vertical plate 17 instead of the vertical plate 16 in the column-beam connecting bracket 20 according to the second embodiment. The vertical plate 17 is an example in which the scallop 17sc that is a notch is provided above and below the joint to the steel pipe column 75 to facilitate the attachment of the backing metal 80. By providing the scallop 17sc, the backing metal 80 can be attached to the upper diaphragm 71 and the lower diaphragm 72 one by one.
Since other configurations are the same as those of the beam-column joining bracket 20 according to the second embodiment, description thereof is omitted.

[Anti-slip processing]
For example, as shown in FIG. 11, the upper surface 11a of the upper horizontal plate, the contact surface 12a of the lower horizontal plate 12 with the H steel beam 60 (lower flange bottom surface 62a), and the H steel beam 60 (web surface 65a) of the vertical plate 16. At least one of the abutment surface 16a, the lower surface 40a of the horizontal fixing plate 40, and the abutment surface 50a of the vertical fixing plate 50 with the H steel beam 60 (web surface 65b) is subjected to anti-slip processing. Preferably it is. Only one of these surfaces can be anti-slip processed on some surfaces, but it is particularly preferred that all surfaces are anti-slip processed.

The anti-slip process is not particularly limited as long as it has an anti-slip effect, and the surface on which the anti-slip process has been applied is not only a file shape or a satin shape, but also a plurality of parallel grooves and a plurality of spiral grooves. Can be mentioned. Further, a synthetic resin material may be applied.
Among these, it is preferable that the surface on which the anti-slip process is performed is formed in a number of uneven filed shapes. Furthermore, it is preferable that the direction of the groove of the file is inclined at an angle of 45 degrees with respect to the end surface on each plate surface. In this way, the anti-slip effect can be further enhanced.

[Construction method]
The construction method will be described below by taking the column beam joint bracket 20 according to the second embodiment as an example.
(1) Joining the column-beam joint bracket to the steel pipe column As shown in FIG. 9, first, the upper and lower portions of the front end surface of the non-contact portion 16A of the vertical plate 16 are temporarily attached to the steel pipe column 75 by spot welding. To do.
Next, the backing metal 80 is joined by welding so as to come into contact with the side surface of the upper diaphragm 71 and the lower portion of the upper horizontal plate 11 formed to protrude in the horizontal direction of the steel pipe column 75. Similarly, the backing metal 80 is joined by welding so as to contact the side surface of the lower diaphragm 72 and the upper part of the lower horizontal plate 12.
Thereafter, as shown in FIG. 7, welding is performed so as to form welds 95 and 96, and the side surface of the upper diaphragm 71 and the upper horizontal plate 11, and the side surface of the lower diaphragm 72 and the lower horizontal plate 12 are securely joined. Further, the front end surface of the non-contact portion 16A of the vertical plate 16 is attached to the steel pipe column 75 by welding, and the joining of the column beam joining bracket 20 to the steel pipe column 75 is completed.

(2) Placement of the H steel beam on the beam-to-column connection bracket To attach the H steel beam 60 to the beam-to-column connection bracket 20, as shown in FIG. While making it collide with the front end surface 11e of the upper horizontal plate of the column beam joint bracket 20, one end side of the lower flange of the H steel beam 60 is loosely inserted into the notch portion 16c of the vertical plate 16 and placed on the lower horizontal plate 12. . At that time, as shown in FIG. 9, the side surface and the front end surface of the web 65 are brought into contact with the contact portions 16 </ b> B of the vertical plate 16 and the end surfaces of the step portions of the vertical plate 16, respectively.
Next, as shown in FIG. 10, the through hole 12h of the lower horizontal plate 12 and the through hole 62h of the lower flange are inserted and fixed with bolts and nuts 91 (see FIG. 5).

(3) Attaching the horizontal fixing plate As shown in FIGS. 9 and 10, the upper horizontal plate 11 of the column beam joint bracket 20 and the horizontal fixing plate 40 across the upper surface of the upper flange 61 of the H steel beam 60 are brought into contact with each other.
Then, the through hole 11h of the upper horizontal plate and the through hole 40h of the horizontal fixing plate 40 are inserted and fixed with bolts and nuts 91 (see FIG. 5).
Similarly, the through hole 61h of the upper flange 61 of the H steel beam 60 and the through hole 40n of the horizontal fixing plate 40 are inserted and fixed with bolts and nuts 91 (see FIG. 5).

(4) Attaching the Vertical Fixing Plate As shown in FIGS. 9 and 10, the vertical fixing plate 50 is brought into contact with the non-contact portion of the vertical plate 16 and the web 65 of the H steel beam 60.
Then, the through hole 50h of the vertical fixing plate 50, the through hole 65h of the H steel beam web 65, and the through hole 16h of the vertical plate 16 are inserted and fixed with bolts and nuts 91 (see FIG. 5).
Further, the through hole 16n of the vertical plate 16 and the through hole 50n of the vertical fixing plate 50 are inserted and fixed with bolts and nuts 91 (see FIG. 5).
With the above construction method, as shown in FIG. 5, the attachment of the H steel beam to the steel pipe column using the column beam joint bracket of the present invention is completed.

  The column beam joint bracket of the present invention is suitably used in the field of technology for joining and fixing a beam to a steel pipe column.

10, 20, 30... Beam-to-column joint bracket 11... Upper horizontal plate 11 a... Upper surface of upper horizontal plate 11 s, 12 s, 61 s, 62 s.・ Contact surface of lower horizontal plate with H steel beam 15, 16, 17... Vertical plate 15A, 16A... Non-joined portion 15B, 16B. 16a..Contact surface of vertical plate with H steel beam 18 ... Step 40 ... Horizontal fixing plate 40a ... Lower surface of horizontal fixing plate 50 ... Vertical fixing plate 50a ... H steel of vertical fixing plate Contact surface with beam 60 ... H steel beam 61 ... Upper flange 62 ... Lower flange 65 ... Web 70 ... Diaphragm 71 ... Upper diaphragm 72 ... Lower diaphragm 75 ...・ Steel pipe columns

Claims (5)

A column beam joint bracket for fixing an H steel beam to a pair of diaphragms formed by projecting in the horizontal direction of a steel pipe column and comprising an upper diaphragm and a lower diaphragm,
An upper horizontal plate having one end joined to the upper diaphragm and the other end abutting the upper flange and the upper surface of the H steel beam flush with each other;
A lower horizontal plate facing the upper horizontal plate, one end side of which is joined to the lower diaphragm, and the lower flange of the H steel beam is mounted and fixed to the other end side;
A vertical plate connecting the upper horizontal plate and the lower horizontal plate and abutting and fixing the web of the H steel beam;
A horizontal fixing plate for connecting and fixing the upper horizontal plate and the upper flange;
At the bottom of the vertical plate, a notch for loosely inserting the lower flange is formed ,
The contact portion of the vertical plate with the web has a step between the non-contact portion and the surface of the non-contact portion and the surface of the web are formed flush with each other. A column beam joint bracket comprising a vertical fixing plate for connecting and fixing the web .   At least one of the upper surface of the upper horizontal plate, the contact surface of the lower horizontal plate with the H steel beam, the contact surface of the vertical plate with the H steel beam, and the lower surface of the horizontal fixing plate, The beam-to-column connection bracket according to claim 1, wherein anti-slip processing is applied. The beam-to-column connection bracket according to claim 1 or 2 , wherein a contact surface of the vertical fixing plate with the H steel beam is subjected to anti-slip processing. The beam-to-column connection bracket according to claim 2 or 3 , wherein the surface on which the anti-slip process is performed is formed in a number of concave and convex files. The top flange and the side end faces of the upper horizontal plate and the side end faces of the bottom flange and the lower horizontal plate of claims 1 to 4 were all the positioning of the vertical plate so as to be flush The beam-column joint bracket according to any one of the above.

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